Taiwan Semiconductor Corporation MBRAD8100H

Overview

MBRAD8100H from Taiwan Semiconductor is an AEC-Q101-qualified 8A, 100V Schottky barrier rectifier in ThinDPAK package, featuring low forward voltage (0.79 V at 8A/25°C), high surge capability (150 A @ 8.3 ms), and junction temperature rating up to +150°C. It serves as a freewheeling or reverse-battery-protection diode in automotive DC/DC converters and car lighting systems.

For engineers reviewing the MBRAD8100H datasheet, MBRAD8100H pinout, MBRAD8100H application, or MBRAD8100H equivalent, key selection criteria include its 2.4°C/W junction-to-lead thermal resistance, J-STD-020 Level 1 moisture sensitivity, and matte tin-plated solderable terminals compatible with automated placement.

Technical Context

The MBRAD8100H uses a single-die Schottky structure optimized for low VF and fast switching in high-frequency power conversion. Its 198 pF junction capacitance at 1 MHz / 4 V enables efficient operation in DC/DC topologies requiring minimal reverse recovery loss.

Thermal performance is defined by R_θJL = 2.4°C/W (with ideal heatsink) and R_θJA = 12.6°C/W on a 2" × 3" × 0.25" aluminum plate. Polarity is marked by a cathode band, and the device meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance requirements.

Key Specifications

Pinout & Package

Package: ThinDPAK (JEDEC TO-252 variation AE), surface-mount, single-anode/single-cathode configuration with cathode indicated by band. Dimensions comply with HQ2SD07-TDPAK-065 REV A outline.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Compared with VS-MBRB8100TRPBF and MBR8100CT, the MBRAD8100H uniquely combines AEC-Q101 qualification, Level 1 moisture sensitivity, and ThinDPAK's low-profile thermal performance-making it the preferred choice for space-constrained, high-reliability automotive power stages.

Availability

MBRAD8100H is available at Aetrix Electronics and suitable for automotive DC/DC converters, reverse battery protection circuits, and car lighting drivers requiring stable component supply across production lifecycles.

Supply support for MBRAD8100H includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power devices, TVS, and rectifiers for automotive and industrial markets.

The MBRAD8100H belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-efficiency, thermally demanding automotive power conversion where low VF, high surge tolerance, and SMT process compatibility are critical.

FAQ

What is the maximum junction temperature rating for the MBRAD8100H?

The MBRAD8100H has a maximum junction temperature (T_J) rating of +150°C, validated across its full operating range from –55°C to +150°C. This rating supports deployment in under-hood automotive environments where ambient temperatures exceed 105°C. The device's thermal design-featuring R_θJL = 2.4°C/W-enables reliable operation at this limit when mounted on appropriate copper area or heatsink. MBRAD8100H must be operated within this absolute maximum to maintain AEC-Q101 reliability compliance.

Is the MBRAD8100H suitable for reverse battery protection in 12 V automotive systems?

Yes, the MBRAD8100H is explicitly designed for reverse battery protection in 12 V automotive systems. Its 100 V V_RRM provides sufficient margin above typical battery transients (including load dump up to ~40 V), and its 150 A IFSM rating handles cranking surges. The cathode band marking ensures unambiguous orientation during assembly, and AEC-Q101 qualification confirms robustness against vibration, thermal cycling, and humidity. MBRAD8100H is used in body control modules and telematics units for this purpose.

What is the forward voltage drop of the MBRAD8100H at 8 A and 125°C?

At 8 A forward current and 125°C junction temperature, the MBRAD8100H exhibits a forward voltage (V_F) of 0.66 V (typical) and 0.71 V (maximum), per the electrical specifications table. This reduced VF versus room temperature (0.79 V max at 25°C) reflects the negative temperature coefficient of Schottky diodes, improving conduction efficiency at elevated operating temperatures. Designers should use the 0.71 V max value for worst-case power loss calculations in MBRAD8100H thermal modeling.

Does the MBRAD8100H require baking before reflow soldering?

No, the MBRAD8100H does not require baking prior to reflow soldering. It is rated at Moisture Sensitivity Level 1 per J-STD-020, meaning it can be stored indefinitely at ≤30°C/60% RH and subjected directly to standard lead-free reflow profiles without preconditioning. This eliminates bake steps in SMT lines, reducing process time and cost. The matte tin-plated leads also ensure reliable wetting during reflow. MBRAD8100H's Level 1 rating is confirmed in the mechanical data section of its official datasheet.

What is the marking code printed on the MBRAD8100H device body?

The marking code printed on the MBRAD8100H device body is "8100", as specified in the Absolute Maximum Ratings table. This 4-digit code identifies the device variant and is located adjacent to the cathode band on the molded surface. It is distinct from the full orderable part number MBRAD8100H and is used for visual verification during inspection and assembly. The marking remains legible after reflow and conforms to JEDEC standards for ThinDPAK packages. MBRAD8100H units shipped in tape-and-reel packaging retain this marking on every unit.